Free Subject Line Grader Tool
Analyze and improve your email subject lines with our AI-powered subject line grader tool - Looking for API access?
Detailed Subject Line Analysis
Our subject line grader provides an in-depth analysis of your email subject lines, evaluating factors such as effectiveness, scannability, sentiment, spam triggers, and the use of all-caps words and emojis.
Get actionable insights to craft compelling subject lines that grab attention and drive open rates.
AI-Powered Optimization
Leveraging advanced natural language processing and machine learning algorithms, our tool offers data-driven recommendations and alternative subject line suggestions to help you optimize for better engagement and conversions.
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API Access?
Integrate our keyword research API directly into your apps and script or into your no-code automation workflows built with tools like Make and Zapier.
API Documentation
API Request
GET
Headers
X-Auth-Key: YOUR_API_KEYParameters
| Parameter | Description | Type | Required |
|---|
Example Response
For complete API access and more features, Go Pro and start integrating today.
Frequently Asked Questions
⭐Go Pro
Unlock Premium Features: Get 500 tokens every day, access to our API, an ad-free experience, and the flexibility to cancel anytime.
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